Password protected multiuser wireless electronic noticing system by GSM with robust algorithm

摘要

This paper elucidates a wireless digital noticing system to provide information in an innovative and smart way. The proposed notice board is a multiuser password-protected SMS-based system fabricated with an LCD. The communication and information transfer between the authentic user and the LCD display unit is done via GSM to ensure remote display facilities, so any notice can be displayed on the electronic board from the user's mobile SMS from distant places. To ensure system flexibility, a multiuser noticing and displaying system has been implemented in the system which can display several notices simultaneously. In addition, the user also can print any notice which is of concern to them. The total system is designed with simple logic with a robust algorithm and fabricated with a PIC midrange microcontroller, LCD, GSM module and other commercially available electronic devices to ensure efficiency and reliability with less cost.